It sounds stupid but can I get pregnant?

I know it may seem like a stupid question hence when I am posting it as an anon but I genuinely don't  think i can get pregnant, I haven't been trying but I've had quite a lot of near misses where I've had unprotected sex and he's ejaculated in me and I haven't got pregnant at all, a lot of the times Its been during my ovulation period. I'm a bit worried, I'm still young and they may just have been lucky escapes but I keep having this idea that maybe I just can't get pregnant, it's got to the stage where I feel like I want to try and get pregnant just to see if anything comes out of it. Has anyone else had this? Thanks ladies